#285EBB
Closest named color: Mid Blue (#276AB3). oklch(49.9% 0.158 260.5), rgb(40, 94, 187).
Aa
White text reads best on this color (6.16:1).
About this color
#285EBB is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.158 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.037 away. White text reads best on it, at 6.16:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.40:1 |
| White text | 6.16:1 |
Values
| HEX | #285EBB |
| RGB | rgb(40, 94, 187) |
| HSL | hsl(218, 65%, 45%) |
| OKLCH | oklch(49.9% 0.158 260.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #285EBB | 6.16:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #285EBB | 3.40:1 | AA large text | Lc 23.8 | Dividers and decoration only |
| #285EBB text on white | 6.16:1 | AA | Lc 80.3 | Fine for body text |
| #285EBB text on black | 3.40:1 | AA large text | Lc -21.6 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#C9DAF6
oklch(88.4% 0.043 260.4)
-
Step 300
300
#A5C2F3
oklch(81% 0.077 260.8)
-
Step 400
400
#74A1EC
oklch(70.8% 0.121 260.2)
-
Step 500
500
#4F87E7
oklch(63.2% 0.157 260.5)
-
Step 600
600
#336ED5
oklch(55.6% 0.17 260.7)
-
Step 700
700 (this color)
#285EBB
oklch(49.9% 0.158 260.5)
-
Step 800
800
#204B95
oklch(42.6% 0.131 260.5)
-
Step 900
900
#204077
oklch(37.8% 0.101 260.5)
-
Step 950
950
#132646
oklch(27.1% 0.065 260.2)
#285EBB with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2668BE | 0.027 |
| Deuteranopia (no green cones) | #005BB9 | 0.022 |
| Tritanopia (no blue cones) | #007483 | 0.122 |
| Achromatopsia (no color) | #616161 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285EBB
#285EBB
oklch(49.9% 0.158 260.5)
- #815B00
#815B00
oklch(49.8% 0.103 80.3)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #285EBB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.037
- French Blue #436BAD ΔE 0.054
- Warm Blue #4B57DB ΔE 0.064
- Denim Blue #3B5B92 ΔE 0.066
- Dusky Blue #475F94 ΔE 0.069
- Iris #6258C4 ΔE 0.070
- Royal Blue #4169E1 ΔE 0.070
- Blue Blue #2242C7 ΔE 0.072
Use #285EBB in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.